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Azure: Do not overwrite existing TXT records (#726)

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YAEGASHI Takeshi 2018-12-05 05:04:39 +09:00 committed by Ludovic Fernandez
parent a5f0a3ff80
commit 4e842a5eb6
1 changed files with 27 additions and 1 deletions
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28
providers/dns/azure/azure.go
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@ -148,11 +148,37 @@ func (d *DNSProvider) Present(domain, token, keyAuth string) error {
rsc.Authorizer = d.authorizer
relative := toRelativeRecord(fqdn, acme.ToFqdn(zone))
// Get existing record set
rset, err := rsc.Get(ctx, d.config.ResourceGroup, zone, relative, dns.TXT)
if err != nil {
detailedError, ok := err.(autorest.DetailedError)
if !ok || detailedError.StatusCode != http.StatusNotFound {
return fmt.Errorf("azure: %v", err)
}
}
// Construct unique TXT records using map
uniqRecords := map[string]struct{}{value: {}}
if rset.RecordSetProperties != nil && rset.TxtRecords != nil {
for _, txtRecord := range *rset.TxtRecords {
// Assume Value doesn't contain multiple strings
if txtRecord.Value != nil && len(*txtRecord.Value) > 0 {
uniqRecords[(*txtRecord.Value)[0]] = struct{}{}
}
}
}
var txtRecords []dns.TxtRecord
for txt := range uniqRecords {
txtRecords = append(txtRecords, dns.TxtRecord{Value: &[]string{txt}})
}
rec := dns.RecordSet{
Name: &relative,
RecordSetProperties: &dns.RecordSetProperties{
TTL: to.Int64Ptr(int64(d.config.TTL)),
TxtRecords: &[]dns.TxtRecord{{Value: &[]string{value}}},
TxtRecords: &txtRecords,
},
}